Mass air flow unit



FIG. 1 is a perspective view of a mass air flow unit of this invention;

FIG. 2 is an inlet end elevational view thereof;

FIG. 3 is an outlet end elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof. 

The ornamental design for a mass air flow unit, as shown. 